Reduced engine power for example is obviously a big pain in the backside. 2 Answers. It comes on in instances when the battery or lines between electrical systems in the engine cease to function properly. Wyatt Johnson GMC in Clarksville TN is a joke of a dealership. The GMC Yukon Denali uses a throttle position sensor (TPS) which commonly fails and causes:. Typically, the “engine power reduced” warning light on your dash means that your vehicle’s performance has been reduced to avoid damaging its engine. But when it happens without triggering any dashboard warning lights, it can be a bit of head scratcher. Chevy Tahoe Forum | GMC Yukon Forum | Tahoe Z71 | Cadillac Escalade - Tahoe Yukon Forum. reduced engine power on 2004 yukon denali after one hour drive shut off the truck and when i started up 30 min later - gmc 2006 yukon xl denali question Depending on your particular vehicle model and the fault detected by the computer, a Reduced Engine Power message may appear along with a particular trouble code in the ECM's memory: P0120-P0124. Satisfied Customers: … It has been in reduced engine power for over 50,000 miles. Click Here to Read More. I had the same problem in my Yukon Denali And after 4 throttle body's, replacing gas pedal, rewiring the grounds replacing sensors, took it to not one but two GMC dealerships who were useless they can't fix their own trucks they're not the brightest !!!! Solution to Reduced Engine Power Message and p1516. Show More. They say they've replaced everything from O2 sensors to gas pedal to gas cap and still can't figure it out. Check engine light; Reduced Power message; OBD trouble code P2135; This issue is related to the throttle position sensor on the gasoline engine, and can be caused by faulty wiring to the TPS, bad connection at the TPS, or a failed TPS. #P0641troublecode #referencecircuitproblem camshaft sensor short circuitالسيارات متخصصة في إصلاح السيارات للسيارات اليابانية والأمريكية. I did everything the dealer suggested and I just cut … Reduced power mode is when the electronic ignition is strategically is not firing all the … The reduced engine power light is a bright yellow indicator on the dashboard of some vehicles that shows there is a problem with the power source of a car or truck. What's the cause of reduced engine power . 2010 Tahoe "Engine Power Reduced" Discussion in 'Engine & Drivetrain' started by A123, … These codes point to issues with the throttle position or pedal position sensor, or circuit. Reduced Engine Power message displayed. It did this again later but the engine died this time then I started it back up and drove it a little ways then it would start sputtering … Took it to the dealer the next day, they hooked it up to the computer and it showed there was a problem, but everything checked out okay. August 2011. Cant remember how many. I refused to take my truck (right before … Gary, GMC Technician. Underhood Service Staff Writers. Advertisement. If this doens't work, inspect the throttle body for leaks. REDUCED ENGINE POWER warning appears on LED dashboard screen one in every 8 to 10 crankings. I told all my Ford friends I would never buy another GM again. Answer. United States (EN) Estados Unidos (ES) Canada (EN) Canada (FR) United Kingdom My account. Category: GM. After fighting off and on "Reduced engine power" for 3 years. So I traded the vehicle. Chevy Tahoe Forum | GMC Yukon Forum | Tahoe Z71 | Cadillac Escalade - Tahoe Yukon Forum. Learn More. Asked by jbrandt73 in Alburnett, IA on . I've driven it another 2,000. miles. Getting a code p2138 and p0009. 2008 YUKON getting a reduced engine power and service stabilitrak. Power … I had the same problem in my Yukon Denali And after 4 throttle body's, replacing gas pedal, rewiring the grounds replacing sensors, took it to not one but two GMC dealerships who were useless they can't fix their own trucks they're not the brightest !!!! Nine problems related to power train have been reported for the 2003 GMC Yukon. He stated that the 99% of the reduced engine power issue was from the accelerator sensor. 188,455 Report; Rowefast answered 3 years ago You should get the codes read, but I suspect the … Many of these issues are associated with corrosion and moisture damage. This is on a 2003 GMC YUKON DENALI w/ 6.0 liter engine. Power Train problem 1. The warning light is still on and and throttle is still disengaged. Forums > 2000 - 2006 Tahoe/Yukon/Escalade Models > Engine & Drivetrain > This site uses cookies. Report; Follow; Asked by Terry Jan 27, 2017 at 07:45 PM about the 2007 GMC Yukon SLT2 4WD. Answered in 5 minutes by: 3/3/2012. A few weeks ago had the Stabilitrak warning along with no traction control and reduced engine power. The throttle position sensor (TPS) on the GMC Yukon Hybrid and GMC Yukon Denali Hybrid is notorious for failure which causes:. I have a 2003 GMC Yukon Denalli. Check all grounds, battery connections. 2004 GMC Yukon XL 1500. GMC Yukon showing Reduced Engine Power, broken oil gauge, running hot. Didn't have them repair it. Failure Date: 12/15/2015 Reduced engine power mode on hwy at 70 mph. Reading some confusing statements online as to the … read more on. Tahoe 2004-2007 Chevrolet Trailblazer 2004-2007 GMC Envoy, Envoy XUV 2004-2007 GMC Savana, Sierra, Sierra Denali 2004-2007 GMC Yukon, Yukon XL and Yukon Denali XL 2004-2007 HUMMER H2 2005-2007 Saab 97x with a V8 Engine (RPOs L33, LH6, L59, LM7, LQ4, LQ9, or LR4) This PI was superseded to update models and condense the recommendations. I replaced it but the problem still existed. After thousands of dollars I found a mechanic very familiar … Advertise EN. Learn More. 0. dan01371 Posts: 1. Reduced Engine Power, reducing my sanity Discussion in 'Engine & Drivetrain' started by … For now, the internal combustion engine will live on, especially when you create something like this inline six that’s capable of V8 power and inline six efficiency. Trouble Codes Related to Reduced Engine Power. What casuses this, how can it be fixed? Jul 01, 2010 | 2003 GMC Yukon XL. Forums > 2000 - 2006 Tahoe/Yukon/Escalade Models > Engine & Drivetrain > This site uses cookies. 5 Answers 2003 GMC Yukon SLT Be … The 2008-2014 GMC Yukon XL 1500 Denali uses a throttle position sensor (TPS) which commonly fails and causes:. Share this conversation. I then changed the throttle body and harness to the throttle body but still had the same problem. Engine Performance problem 2008 GMC Yukon V8 Two Wheel Drive Automatic I would like to ask merlin2021 a question Dear Merlin, My 2008 GMC Yukon has had reduced engine power 5 times. Three weeks pass with no problems. Category: GM. I have a 2007 gmc Yukon and it keeps stop on me it say reduce engine power then I have to wait then minutes then I can pull off again . The Yukon is a masterpiece and an example of what GMC is capable of producing. Same Reduced engine power and stabilitrak off lights came on. I have an gmc yukon denali with reduced engine power on dash .trouble codes are p0120,p0220,p1516.The throttle body and pedal position sensor were replaced but the reduced engine power still shows .al … read more Gmc yukon denali reduced engine power stability system disabled. Clean them up and tighen them. The technician may observe on a scan tool DTC P2135: Throttle Position … June 21, 2015. my 2004 denali continues to die when driving at random and the t/c light comes on first shuts down and loses power you shut it off wait a few minutes and does it again drive on and repeats what is the cause and what is the fix? Some customers may comment on an illuminated malfunction indicator lamp (MIL), with a Reduced Engine Power message displayed. Please also check out the statistics and reliability analysis of the 2003 GMC Yukon based on all problems reported for the 2003 Yukon. Check engine light illumination; Reduced Power message; OBD trouble code P2135; This issue is related to the throttle position sensor, and can be caused by faulty wiring to the TPS, bad connection at the TPS, or a failed TPS. By continuing to use this site, you are agreeing to our use of cookies. … By. Show Less. Advertisement. It was of course an additional $500 to fix. 2010 Yukon Service stabilitrak and check engine lights both came on and I got the reduced power message and my speed was limited to 45mph. I fear for the safety of my family and I have lost confidence that that this last fix was "the fix". What’s more, all of these issues can be tackled at home saving expensive … Check engine light illumination; Reduced Power message; OBD trouble code P2135; This issue is related to the throttle position sensor, and can be caused by faulty wiring to the TPS, bad connection at the TPS, or a failed TPS. I've actually been in a wreck due to the vehicle going into reduced engine power. GMC Yukon Reduced Engine Power message ... After three months of "Reduced Engine Power" message on my way to work everyday and having to go 15 mph and pull in a safe place to temporarily correct the problem on my 03 Silverado 1500hd 4x4 I think it is fixed. Advertisement . I just had the same problem on my 2004 1/2 ton Chevy … On my way back from town the door locks kept locking and unlocking then they stopped then after i stopped i went to take off the engine started skipping then the check engine light came on then went off. After thousands of dollars I found a mechanic very familiar … P1125. My reduce engine power warning came on and the throttle was disabled. By continuing to use this site, you are agreeing to our use of cookies. Chevy Tahoe Forum | GMC Yukon Forum | Tahoe Z71 | Cadillac Escalade - Tahoe Yukon Forum. I've had the same problem with the reduced power and tps sensor which is your gas pedal. They found plenty wrong with tirods, ball joints etc. The dearlership assured me that the problem was completely unrelated to the fix on Monday, but I don't trust the dealerships. Question type: Maintenance & Repair. The computer in your car, also known as its “electronic control unit” (ECU) has triggered the Reduced Power Mode after it has detected a system failure. Look Here Discussion in 'Engine … Submitted: 7 years ago. I have a 2004 Gmc Yukon AWD. My account Saved searches … 0 replies Report. It happened twice in one day, then the service engine soon light came on . It idles fine with no leaking any where. I followed the procedure in the manual to turn off the stabilitrak and power normalized but the check engine light remained on. Learn More. The most recently reported issues are listed below. Forums > 2007 - 2014 Tahoe/Yukon/Escalade Models > Engine & Drivetrain > This site uses cookies. My Yukon is completely dead. For my 2003 gmc yukon xl, the checl engine light is on, we are getting a p1125 code and reduced engine power. Used Cars New Cars Certified Cars Car Values Questions More. 1 Answer Warning stating reduce engine power and something about stability. I cant find any other problems with the engine. Ask Your Own GM Question . Reduced engine power in a gmc yukon denali xl. Skip To Content. Dec 10, 2012 . GM Mechanic: Gary, GMC Technician replied 7 years ago. Gmc yukon denali reduced engine power stability system disabled. My 2003 yukon sends a signal saying "Reduced Engine Power" and then the vehicle loses power. After I left the shop I had the reduced engine power, twice. Each time they tell me it is fixed. 2021 GMC Yukon Denali | Photo Credit: GMC. I bought it with 264,500 miles yes that is correct. 2. Is there a reset for that warning indicator? Then, this past … By continuing to use this site, you are agreeing to our use of cookies. We have replaced the app sensor and thottle body, but no has change. Fixing … The engine was not overheating but I did replace the water pump and changed the oil. Took it to national department store chain, for a wheel alignment. Here is how to fix the issue of Reduced Engine Power on your Chevy Silverado or Tahoe, GMC Sierra or Yukon, and even Cadillac Escalade. Luckily, if your engine is losing power without triggering warning lights, that suggests it’s probably 1 of 4 potential issues. Failure Date: 12/15/2015 reduced engine power in a GMC Yukon Hybrid and GMC Yukon Denali Hybrid is notorious failure. Actually been in a GMC Yukon xl 1500 Denali uses a throttle position … i have a 2004 GMC SLT. Same reduced engine power, twice fear for the safety of my family and i have lost confidence that this! Gmc is capable of producing on Monday, but no has change 5 Answers 2003 GMC Yukon 1500. To 10 crankings problems reported for the safety of my family and i cut! 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